/*
 * Tencent is pleased to support the open source community by making Angel available.
 *
 * Copyright (C) 2017 THL A29 Limited, a Tencent company. All rights reserved.
 *
 * Licensed under the BSD 3-Clause License (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 *
 * https://opensource.org/licenses/BSD-3-Clause
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 *
 */
package com.tencent.angel.ml.GBDT.udf.getrow;


public class GBDTTrainParam extends RegTTrainParam {

  public int treeNum = 10;
  public int maxThreadNum = 10;

  /** quantile sketch, size = featureNum * splitNum */
  public String sketchName;
  /** gradient histograms, size = treeNodeNum * featureNum * splitNum */
  public static String gradHistNamePrefix = "gbdt.grad.histogram.node";
  /** active tree nodes, size = pow(2, treeDepth) -1 */
  public String activeTreeNodesName;
  /** sampled features. size = treeNum * sampleRatio * featureNum */
  public String sampledFeaturesName;
  /** split features, size = treeNum * treeNodeNum */
  public String splitFeaturesName;
  /** split values, size = treeNum * treeNodeNum */
  public String splitValuesName;
  /** split gains, size = treeNum * treeNodeNum */
  public String splitGainsName;
  /** node weights, size = treeNum * treeNodeNum */
  public String nodeGradStatsName;
}
